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No. 523,204. I Patented Apr; 18, I899.-

4 I. P. DILLON.

GALENDEBlNG-IACHINE.

(Application filed July 26, 189B.) H0 Model.)

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Patented Apr. l8, I899. l'. P. DILLON.

CALENDERING MACHINE.

(Application filed July 28, 1898.)

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@NHED STATES PAT NT OFFICE.

IRIVIN PETER DILLON, OF LAWRENCE, MASSACHUSETTS, ASS'IGNOR OF ONE-HALF TO HENRY C. KING, OF SAME PLACE.

CALENDERlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 623,204, dated April 18, 1899.

' Application filed July 26,1898. SerialNo. 686,932. (No model.)

To all whom it may concern:

Be it known that I, IRWIN PETER DILLON, of Lawrence, county of Essex, and State of Massachusetts, have invented an Improvement in Calendering-Wlachines, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

My invention relates to calendering-machines, and is an improvement on the kind of machine shown in United States Patent No. 600,518, granted to me March 15, 1898. My said patent covers a doctor not axially journaled in the frame of the machine, but provided with means rendering it capable of moving bodily with the roll, so that if the. roll jumps at either end or should jump simultaneouslyat both ends in any case the doctor would be able to maintain its proper position on and relatively to the calendering-roll, and in said patentlhave shown one specific means for carrying out my invention, the mechanism herein shown being another species under said broad invention, having, however, certain advantages and radical differences of construction and operation.

My present invention also includes other improvements whereby any particular doctor may be quickly swung away from its roll, or, if desired, all the doctors may be simultaneously moved away from the stack of rolls constituting the calendering-machine.

Other features of my invention and the various details of construction thereof will be more fully apprehended in the course of the following description, and the invention will be more particularly defined in the appended claims.

In the drawings, in which I have shown my invention in its preferred details of construction, Figure 1 is a front elevation of a calendering-machine constructed to embody my present invention. Fig. 21s acentral vertical transverse section thereof. Fig. 3 is an enlarged fragmentary detail, taken on the line 3 3, Fig. 1, for the purpose of showing the constructional details of the doctor in enlarged View. Fig. 4 is a horizontal sectional view on line 4c 4, Fig. 3, parts being broken away.

The general arrangement of the calendering-machine, comprising standards A, a base A, rolls a head-blocks or caps a and other general features of construction not shown,

may be and is of any usual or preferred construction. The doctors, as is well known, are similarly arranged in such machines on opposite sides of the rolls alternately between successive pairs of rolls, and I have therefore deemed it unnecessary to herein show and describe more than one of these doctors.

On a suitable bearing-plate Z), Figs. 2 to 4, is mounted a carrier-bar 1), herein shown as supported at its outer end on the spindle c of an eccentric o and at its innerend arranged to slide freely between the plate I) and a projecting. lip or way d, which may be formed integrally with the plate 6 or may be bolted thereto, as herein shown at d, an antifrictionroll d being preferably provided to support the lower edge of the bar I), as indicated by dotted lines in the figures. At its extreme inner end the bar Z2 is vertically slotted, as indicated at b to receive and guide a stud or arm 6, projecting from an end flange e of the blade or doctor proper, 6 said stud being shown as having an antifriction-roll e mounted thereon and provided with curved or crowning peripheral edges, as is clearly shown in Fig. l.

The doctor 6 is pivotally supported at each end at e on a lever 6 pivoted intermediate its ends at c to a projection 19 said lever being normally maintained yieldingly raised at its inner end by means of a spring 8, engaging its outer end and supported on a threaded bolt or arm 6 carrying a tension-nut e and pivoted to the carrier-bar at 6 although it will be understood that I do not restrict my invention to this form of means for holding the lever yieldingly in its normal position, and I wish to add at this point that I do not intend to restrict myself herein to any of the details shown and described, but intend to cover the general constructional features broadly without reference to their precise de tails.

The eccentric c, operated by a handle 0 is inclosed by a strap 0 provided at its forward end with a rod 0 on which is mounted a spring 8, bearing at its forward end against a perforated bearing a, pivotally mounted in the barb, said rod 0 carrying at its forward end a stop a to limit the forward-sliding movement of the bar-b, said bar being slotted at b to slide back and forth on the shouldered spindle of the eccentric, as clearly shown in Figs. 3 and 4.

It is frequently desirable to get at a roll readily and quickly, and accordingly the plate his not only adjustably mounted at b in a .way g of the support g, but it is held quickly removable from said support at its lower end by means of a clamp b working in a slot b of the plate 1). By this means the doctor may be instantly released from the roll and swung entirely back on the bolts 12 as pivots, so that the operator may readily inspect the nip of the rolls. A further provision toward the same general end resides in pivoting the usual directing-fingers h on a rod h at the lower part of the doctor, said'fiugers having at their upper ends one or more books or shoulders 7L2 to be engaged bya spring-catch h shown as secured at h to the body of the doctor. By this construction either or both sections of said directing-fingers may be quickly swung back and automatically locked out of the way by the spring-catcln said fingers being herein shown as held in an intermediate position by said spring-catch.

Not. only is it desirable to be able to swing back any particular doctor, but also at times it is advantageous to be able to quickly remove all the doctors from one side of the machine, in order, for instance, to replace a damaged roll. Accordinglylhave made the end supports g movable, said supports being herein shown as pivoted at their lower ends at g and held at their upper ends by a boltg carrying a wing-nut g and pivoted at g to the cap a so that it may be swung down in position, as shown, to occupy a recess g provided therefor in the support.

The operation of my improved doctor is as follows: As a roll moves up, let us suppose, at the end adjacent the mechanism shown in Fig. 3, that end of the doctor instantly responds and moves upwardly under the pressure of the spring 5, the doctor being raised by the lever a turning on its pivot e and the roller (2 traveling readily upwardly in the vertical slot 19 while at the same time inward movement, it any be required under the circumstances, is readily accomplished by the forward pressure of the spring 3', which moves the bar (9' forward readily on the roller (1 the slot 17 sliding over the eccentric-pin c and the curved periphery of the roller a acting as a sort of universal joint to permit the required movement of the parts. If the calenderingroll should suddenly jump upwardly in parallelism to itself, it will be evident that the entire doctor will quickly move forward under the propelling influence of the springs s at the opposite end thereof,-said springs in stantly sliding forward both of the carrierbars, while at the same time the levers e and their springs aid in holding the doctor t-ightlypressed against its roll. It will be understood that the proper tension will be maintained on the springs s 8 according to the requirements of the work, the former being regulated by the nut E and the latter by the position of the eccentric c.

If anything should happen to the calendering-rollsas, for instance, if the paper should getcaught or a roll should get scratchedthe operator can quickly swing up the fingers h away from the roll, and they will be automatically held by the spring-catch 72/3 while the operator inspects the roll. If the accident is serious, the operator can quickly swing the entire doctor out of the 'way simply by loosening the clamps b and swinging the doctor back and upwardly on its pivots b and if the matter is so serious as to require considerable repair or to require a new roll the the entire series of doctors may be swung down out of the way without otherwise disturbing the machine simply by loosening the wing-nuts g swinging the bolts g upwardly out of engagement with the supports or pillars g, and then turning the latter and their doctors down out of the way.

Having described my invention and without limiting myself to the details thereof or otherwise than as hereinafter expressed, what I claim, and desire to secure by Letters Pat- I ent, is

1. In a oalendering-machine, a suitable support, a carrier movable in one direction thereon, a doctor mounted on said carrier and movable relatively thereto in a different direction, the resultant of the two distinct movements permitting the doctor to follow the movements of its roll, substantially as described.

2. In a calendering-machine, a suitable support, a carrier yieldingly mounted thereon, a doctor supported by said carrier, and means carried by said carrier permitting bodily movement of the doctor relatively to the carrier, substantially as described.

3. In a calendering-machine, a doctor, carriers therefor, said carriers and doctor being provided at their adjacent ends withcooperating means for guiding the doctor in its vertical movement, bearings for said carriers, the latter being movable on said bearings to and from the calendering-rolls, and means for moving said doctor vertically relatively to its carriers, substantially as described.

at. In a calendering-machine, a doctor, pivotal bearings for the opposite ends of said doctor, yielding carriers for said doctor and said pivotal bearings, said doctor having bearings in said carriers independent of said pivotal bearings, and the latter being movable independently of said bearings in the carriers, substantially as described.

5. In a calendering-machine, a doctor, pivotal bearings for the opposite ends of said doctor, yielding carriers for said doctor and;

said pivotal bearings, said doctorhavin g bearings in said carriers independent of said pivotal bearings, and the latter being movable independently of said bearings in the carriers, combined with means normally tending to move said pivotal bearings away from their carriers, substantially as described.

6. In a oalendering-machine, a doctor, pivotal bearings for the opposite ends of said doctor, yielding carriers for said doctor and said pivotal bearings,said doctor having bearings in said carriers independent of said pivotal bearings, and the latter being movable independently of said hearings in the carriers, combined with means normally tending to move said pivotal bearings away from their carriers, and an adjustable device for said means, substantially as described.

'7. In a calendering-machine, a doctor, pivotal bearings for the opposite ends of said doctor, yielding carriers for said doctor and said pivotal bearings, said doctor having bearings in said carriers independent of said pivotal bearings, and the latter being movable independently of said bearings in the carriers, and means for regulating the yielding tension of said carriers, substantially as described.

8. In a calendering-machine, a doctor having at each end a stud or arm, a carrier having at its inner end a vertical guide to receive said stud and permit the latter to move freely up and down, a bearing for said carrier, the latter being movable on said bearing toward and from the rest of the machine, and means yieldingly supporting said doctor independently of said studs, substantially as described.

9. In a calendering-machine, a doctor having at each end a stud or arm, a'carrier having at its inner end a vertical guide to receive said stud and permit the latter to move freely up and down, a bearing for said carrier, the latter being movable on said bearing toward and from the rest of the machine, and means carried by said carrier and yieldingly supporting said doctor independently of said studs,

substantially as described.

10. In a calenderingmachine, a suitable support, a carrier mounted to slide thereon, a doctor mounted on and supported by said 12. In a calendering-machine,a doctor,sup-

ports, stationary bearing-plates on which said doctor is yieldingly mounted, said bearingplates' being movable relatively to their supports,and clamps normallylockin g said plates in position and permitting them to be instantly unlocked, whereby the doctor and its plates .may be moved on said supports relatively to the adjacent'roll, substantially as described.

13. In a calendering-m achine,a doctor,supports, stationary bearing-plates on which said doctor is yieldingly mounted, said bearingplates being pivoted at one end to'said supports, and clamps detachably holding their opposite ends, the unclamping thereof permitting said plates anddoctor to be swung back from the adjacent roll, substantially as described.

14. In a calendering-machine, a plurality,

of doctors, a support or pillar for each end of said doctors, said supports and their doctors being bodily movable relatively to and i nde pendently of the rest of the machine, and means normally locking said supports and doctors in operative position, substantially as described.

15. In a calenderingmachine, end supports for the doctor, one support adjacent each end of the calendering-rolls, said supports being pivoted to the base of the machine, and means removably holding the upper ends of said supports in operative position, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

' IRWIN PETER DILLON.

W'itnesses:

GEO. H. MAXWELL, JOHN C. EDWARDS.

Correction in Letters Patent No. 623,204.

Tt is hereby certified that Letters Patent No. 623,204, granted April 18, 1899, upon the application of Irwin Peter Dillon, of Lawrence, Massachusetts, for an improvement in Oalendering-Machines, an error appears in the printed specification requiring correction as follows: In line 16, page 3, the word adjustable should read adjusting and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed, countersigned, and sealed this 25th day of April, A. D., 1899.

[SEAL] WEBSTER DAVIS,

Assistant Sem'etary 0f the Interior. Oountersigned O. H. DUELL,

Commissioner of Patents. 

